| Primary satellite | Secondary satellite |
| Name | ALOS | DMSP 5D-2 F13 DEB |
| Spacetrack catalog number | 28931 | 40474 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Apr 16 04:12 | 2021 Apr 15 13:48 |
| Time of closest approach (UTC) | 2021 Mar 03 02:27:06.900 |
| Minimum distance | 19.291 km |
| Height difference | -8.026 km |
| Relative speed | 14.216 km/s |
| Angle between velocity vectors | 142° |
| Geographic position | 63.3°S, 7.8°E |
| Height | 708 km |
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